Preserving-shield for poles and posts.



J. A. GOGSWELL.

PBESBRVING SHIELD PoR PoLBs AND PosTs.

APELIGATION FILED DEG.10, 1908.

938,291 I/ Patented sept. 7, 1909.

UNITED STATES PATEN T OFFTCE.

j ,l WILLIAM H. STEWART, ONE-FOURTH TO JOSEPH D. LOWE, AND ONE-FOURTH TO l LOUIS AUERBAGH, ALL OF BOSTON, MASSACHUSETTS.

l PRESERVING-SHIELD FOR POLES AND POSTS.

933,291. Specification of Letters Patent. Patented Sept, 7, 1909, Application led December 10, 1908. Serial No. 466,762.

To all whom t may concern: coated pole is filled with a composition of Be it known that I, JAMES A. CoGswELL, matter as e which adheres to the case and i of Malden, county of Middlesex, State of also to the coated pole. The outer case may. 55 Massachusetts, have invented an Improvehave a bottom piece b', as shown in Fig. l, ment in Preserving-Shields for Poles and or sald bottom piece may be omitted, as Posts, of which the following is a specificashown in Fig. 3. A cap c is then applied tion, to the top of the interposed filler and case,

Poles for electric wires and similar purwhich is beveled or otherwise formed. 60 poses, and also posts, which are set in the The liquld paint which I may employ ground, have a tendency to decay mor consists of the following ingredients uickl at or near the surface o the roun than any other place; and this inention gtletroleum 011 gil' has for its object to construct an improved Sulfur l 1b 65 shield which is adapted'to be applied to a Sulfate 2 1b' pole or post o n t the surace of S the grou v 71,.. n u ences Such a' liquid paint is very effective as a bo v aid level, w ich prepreserving agent, and is also waterproof,

serves and Streng e1`"[e p'I although other liquid paints may be em- 70 Figure 1 is a side elevation and longituployed 1n lieu thereof.

dinal vertical section of a preserving shield The composition of matter which I may for poles and yposts embodying this invenemploy for filling the space between the tion. Fig. 2 is a cross section of the shield Outer case and the pole consists of the folshown in Fig. l. Fig. 3 is a longitudinal lowing ingredients :f 75 vertical section of a modified form o f shield. Portland Cement 25 1b s a represents the pole or post. It 1s herein Sand 25 a shown as having been set 1n the ground for Sulfu, 2 c,

a period of time, and as having become partially decayed. It will be observed that the to which 1s added. say from one to one and 80 decayed portion is represented at the level ahalf per cent. of an insoluble lime salt of vof the surface of the ground and extends a fatty acid, substantially free from glycshort distances both above and below said erin and other soluble substance, as for inlevel. stance, insoluble stearato of lime. Such a My newly constructed shield comprises composition of matter is waterproof, par- 85 an outer case b, of cylindrical or other form, t-icularly by reason of the insoluble stearate which may be made of galvanized sheetof lime which is employed, and is very tenairon, or any other suitable material. It is cious and clings to the case and also to the made considerably larger in diameter than pole, and, therefore, forms an excellent the pole a, and surrounds said pole. vIt is binder and is well suited to the require- 90 made long enough to extend short distances ments. Other compositions of matter may both below and above the level of the ground be employed in lieu thereof, but it is essenwhen placed in position on the pole. TheH4 tial that the composition of matter which is ends of said sheet-iron plate are secured toemployed shall be waterproof and shall have gether in any suitable manner, as for inthe capability of clinging tenaciously to both 95 stance, by an ordinary tinmans joint, which the outer case and the pole.

is attened or secured after the plate has For producing the cap c I' may employ been placed around the pole. the same composition of matter which is em- The decayed portion of the pole is first ployed as the filler, adding thereto a small thoroughly cleaned. It is then coated as at quantity of lamp-black, or other coloring 100 d with a liquid paint having preserving matter. qualities which forms a waterproof film This shield, it will be observed, which surthereon; then the outer case is applied and rounds the pole, extends laterally and being then the space between said case and the in intimate contact therewith, serves to shed the water whichruns down the pole ,Y and thereby prevents an accumulation of water at the lower end of the pole. 1

Having thus described my invention, what I claim as new and desire to secure by Let-- ters Patent is ,I

l. A preserving and strengthening shield for poles consisting of an outer case of larger diameter than the pole, which surrounds the pole, a lm of waterproof Woodpreserving material in intimate contact with the pole, and a composition of matter interposed between said case and the coated pole, which intimately engages both t-he case and the coated pole, containing cement, sand and an insoluble lime salt of a fatty acid, substantially free from glycerin or other soluble substance, substantially as described.

2. A preserving and strengthening shield for poles consisting of an outer case of larger diameter than the pole, which surrounds the pole, a lm of waterproof woodpreserving material in intimate contact with the pole, and a waterproof cementitious compound containing an insoluble lime salt of a fatty acid, substantially free from glycerin or other soluble substance interposed between said case and the coated pole, which intimately engages both the case and the coated pole, substantially as described.

3. A preserving and strengthening shield for poles consisting of an outer case of larger diameter than the pole, which surrounds the pole, a film of waterproof woodpreserving material in intimate contact with the pole, and a composition of matter interposed between said case and the coated pole, which intimately engages both thc case and the coated pole, consisting of cement, sand, sulfur and an insoluble lime salt of a fatty acid, substantially free from glycerin or other soluble substance, substantially as de scribed.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

JAMES A. COGSVELL. lVitnesses B. J. NoYEs, H. B. DAVIS. 

